将矩阵缩放到新范围

Question

  

可能重复：
  MATLAB: how to normalize/denormalize a vector to range [-1;1]
  matlab rescale matrix data to -1 to 1

考虑一个100x200矩阵A，是否有一个builtin函数（或一组builtin函数）将A的范围设置为任意比例？< / p>

Answer 1

这有资格吗？

R = [.5 .9];
dR = diff( R );

A =  A - min( A(:)); % set range of A between [0, inf)
A =  A ./ max( A(:)) ; % set range of A between [0, 1]
A =  A .* dR ; % set range of A between [0, dRange]
A =  A + R(1); % shift range of A to R